Advertisements
Advertisements
Question
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Advertisements
Solution
A switch is an electric device that is used to complete or break an electric circuit. If the switch is ‘ON’, then a current can flow through the circuit. However, if the switch is ‘OFF’, then the current cannot flow through the circuit.
Electrical appliances such as table fans, electric lamps, washing machines, juicers and mixers, TV, radio, etc. have switches built into them.
RELATED QUESTIONS
Name the wire in a household electrical circuit to which the switch is connected
What is the purpose of a switch in a circuit?
The following diagram shows three lamps and three switches 1, 2 and 3 connected with two cells.
- Name the switch / switches to be closed so as to light all the three lamps.
- How are the lamps connected: in series or in parallel?
It is dangerous to connect the switch in the neutral wire. Explain your answer.
What is meant by ‘MCB’? Which part of the domestic electric circuit does it replace?
What are ‘dual switches’? Mention their one main use.
Would the bulb glow after completing the circuit shown in Figure if instead of a safety pin we use an eraser?
In the circuit shown in the following figure, when the switch is moved to ‘ON’ position,
You are provided with a bulb, a cell, a switch and some connecting wires. Draw a diagram to show the connections between them to make the bulb glow.
Name the wire to which a switch is connected.
